<template>
  <div class="login_container">
    <div class="login_box">
        <div class="avatar_box">
          <img src="../assets/logo.png" alt="">
        </div>

        <!-- 登录标签区域 -->
        <el-form  ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
          
          <!-- 用户名 -->
          <el-form-item  prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
          </el-form-item>

          <!-- 密码 -->
           <el-form-item prop="password">
           <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-3702mima"></el-input>
          </el-form-item>

             <!-- 按钮显示 -->
           <el-form-item class="btns">
              <el-button type="primary" @click="login">登录</el-button>
               <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>

        </el-form>

    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      /* 登录表单数据绑定 */
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username:[
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 3, max: 10, message: "长度在3到10个字符之间", trigger: "blur" }
        ],
         // 验证密码是否合法
        password:[
          { required: true, message: "请输入登录密码", trigger: "blur" },
          { min: 3, max: 10, message: "长度在3到10个字符之间", trigger: "blur" }
        ]
      }
    }
  },
  methods:{
    // 点击重置登录表单
    resetLoginForm(){
      // console.log(this)
      this.$refs.loginFormRef.resetFields();
    },
    login(){
      // 判断验证是否通过
      this.$refs.loginFormRef.validate(async valid=>{
        // console.log(valid)  true
        if(!valid) return;
        // 验证通过发起请求
        const { data: res } = await this.$http.post('login',this.loginForm)
        // console.log(res)
        if(res.meta.status !== 200) return  this.$message.error('登录失败');
        this.$message.success('登录成功'); 

        // 1 登录成功 保存token
        window.sessionStorage.setItem("token", res.data.token);  
        // 2 跳转到首页
        this.$router.push('/home')
        
      })
    }
  }

}
</script>

<style   scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
.login_box{
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top:50%;
  left: 50%;
  transform: translate(-50% , -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border:1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%,-50%);
  background-color: #fff;

}
.avatar_box > img{
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns{
  display:flex;
  justify-content: flex-end;
}
</style>
